Perhaps you should try some spelling variations:
yang yang » wang yang
gene yang » gene bank
yang amin » yang jin, yang lin, yang mind
amin hong » min hong, among hong, tin hong
hong hai » shang hai, zhong tai, dang hai
yang yi » yang di, yang xi, yang jui
a gene » a genre, a gender, a gentle

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((yang yi) or (((yang yang) OR (wang yan)))) a gene yang amin hong hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((yang yi) OR (((yang yang) OR (wang yan)))) a gene yang amin hong hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((yang yi) or (((yang yang) OR (wang yan)))) a gene yang amin hong hai ;".
• Adding a wildcard symbol may retrieve word variants: dong ((yang yi) or (((yang yang) OR (wang yan)))) a gene yang amin hong hai ;*.